Examlex
The proton has
Opportunity Cost
Surrendering the chance for gains from other choices by opting for one path.
Machinery
Equipment, especially of a mechanical nature, used in the production process of goods.
Petroleum
A liquid that occurs naturally under the surface of the Earth, which can be processed into fuel and a range of chemical products.
Labor Productivity
A measure of economic performance calculated by dividing total output by the total number of hours worked.
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